BIOL3030 Lecture Notes - Lecture 5: Myelin, Resting Potential, Depolarization
13 Sep 2016
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Brain structure: forebrain, brainstem, midbrain, pons (hindbrain, medulla oblongata (hindbrain, cerebellum, corpus callosum, develops in the embryo. Spinal nerves: important functions in muscle movement and sensation, motor, sensory. Project from the spinal column (neural tube: integrated into cns by interneurons, grey matter and white matter (the axons that are projecting from the grey matter, each vertebrae has its own spinal nerve going left and right. Peripheral neurons send information to the cns (afferent) Cns sends information to the peripheral to effect change. Have a ganglion and ach, the neurotransmitter is ne (neuroepinephrine: controls heart rate and fight or flight hormone, ach and ne are both hormones and neurotransmitters, 2. Soma: interprets electric signal information and sends it down the axon if the signal is strong enough, action potential has to be greater than the membrane potential, signal=action potential, axon, covered with myelin to prevent degradation of information.
